As a grad student, Margaret Geller is invited to a private island off the coast of Maine by legendary physicist John Wheeler and his wife, for a trip she'll never forget.

Margaret Geller is an astrophysicist at the Harvard-Smithsonian Center for Astrophysics. She received her Ph.D. in physics from Princeton University in 1975. Geller is best known for her pioneering 3D maps of the distribution of galaxies in the nearby universe. These maps revealed surprising large patterns in the universe marked by galaxies like the Milky Way.Geller is an internationally renowned public speaker. Her prize-winning films include the first computer-animated voyages through the universe based on scientific measurements. Geller is a member of the National Academy of Sciences. She has received a MacArthur Fellowship and many other prestigious awards.